01
Choose a mode
Use Standard for everyday arithmetic or Scientific for trigonometry, logarithms, powers, constants, factorials, and parentheses.
Standard and scientific calculator
Calculator
Calculate normal arithmetic or switch to scientific mode for trigonometry, logarithms, powers, constants, factorials, and parentheses.
Modes
2
Standard and scientific
Angle
DEG
For trig functions
History
0
Recent calculations
Normal modeScientific modeKeyboard inputHistoryDEG / RAD
Calculator
Normal mode
READY
0
0
Use Enter for equals, Backspace to delete, and Escape to clear.
Standard keypad for quick daily calculations.
GuideHow it works3 steps
02
Enter the expression
Tap the calculator keys or use your keyboard for numbers, operators, Enter, Backspace, and Escape.
03
Reuse results
Copy the current result, use Ans in scientific mode, or reopen a previous calculation from the history panel.
More toolsRelated tools
FAQFrequently asked questions
Does the calculator have both normal and scientific options?
Yes. Switch between Standard and Scientific modes from the segmented control above the keypad.
Can I calculate trigonometry in degrees?
Yes. Scientific mode includes a DEG/RAD toggle for sin, cos, tan, and inverse trigonometric functions.
Does it support keyboard input?
Yes. Number keys, decimal, common operators, Enter, Backspace, and Escape work when the calculator page is active.
Are calculations sent to a server?
No. Expressions are parsed and calculated locally in your browser.